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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2020 Linaro Limited. All rights reserved.
* Author: Viresh Kumar <viresh.kumar@linaro.org>
*/
#ifndef IPC_SEMBUF_H
#define IPC_SEMBUF_H
#include "lapi/posix_types.h"
#include <sys/sem.h>
#include "tst_timer.h"
#include "ipcbuf.h"
#ifndef HAVE_SEMID64_DS
#if defined(__mips__)
#define HAVE_SEMID64_DS
/*
* The semid64_ds structure for the MIPS architecture.
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* Pad space is left for 2 miscellaneous 64-bit values on mips64,
* but used for the upper 32 bit of the time values on mips32.
*/
#if defined(__arch64__)
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long __unused1;
unsigned long __unused2;
};
#else
#define HAVE_SEMID64_DS_TIME_HIGH
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
unsigned long sem_otime; /* last semop time */
unsigned long sem_ctime; /* last change time */
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long sem_otime_high;
unsigned long sem_ctime_high;
};
#endif
#endif /* __mips__ */
#if defined(__hppa__)
#define HAVE_SEMID64_DS
/*
* The semid64_ds structure for parisc architecture.
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* Pad space is left for:
* - 2 miscellaneous 32-bit values
*/
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#if __BITS_PER_LONG == 64
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
#else
#define HAVE_SEMID64_DS_TIME_HIGH
unsigned long sem_otime_high;
unsigned long sem_otime; /* last semop time */
unsigned long sem_ctime_high;
unsigned long sem_ctime; /* last change time */
#endif
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long __unused1;
unsigned long __unused2;
};
#endif /* __hppa__ */
#if defined(__powerpc__) || defined(__powerpc64__)
#define HAVE_SEMID64_DS
/*
* The semid64_ds structure for PPC architecture.
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* Pad space is left for:
* - 2 miscellaneous 32/64-bit values
*/
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#ifndef __powerpc64__
#define HAVE_SEMID64_DS_TIME_HIGH
unsigned long sem_otime_high;
unsigned long sem_otime; /* last semop time */
unsigned long sem_ctime_high;
unsigned long sem_ctime; /* last change time */
#else
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
#endif
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long __unused3;
unsigned long __unused4;
};
#endif /* defined(__powerpc__) || defined(__powerpc64__) */
#if defined(__sparc__)
#define HAVE_SEMID64_DS
/*
* The semid64_ds structure for sparc architecture.
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* Pad space is left for:
* - 2 miscellaneous 32-bit values
*/
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#if defined(__arch64__)
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
#else
#define HAVE_SEMID64_DS_TIME_HIGH
unsigned long sem_otime_high;
unsigned long sem_otime; /* last semop time */
unsigned long sem_ctime_high;
unsigned long sem_ctime; /* last change time */
#endif
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long __unused1;
unsigned long __unused2;
};
#endif /* __sparc__ */
#if defined(__x86_64__)
#define HAVE_SEMID64_DS
/*
* The semid64_ds structure for x86 architecture.
* Note extra padding because this structure is passed back and forth
* between kernel and user space.
*
* Pad space is left for:
* - 2 miscellaneous 32-bit values
*
* x86_64 and x32 incorrectly added padding here, so the structures
* are still incompatible with the padding on x86.
*/
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#ifdef __i386__
#define HAVE_SEMID64_DS_TIME_HIGH
unsigned long sem_otime; /* last semop time */
unsigned long sem_otime_high;
unsigned long sem_ctime; /* last change time */
unsigned long sem_ctime_high;
#else
__kernel_long_t sem_otime; /* last semop time */
__kernel_ulong_t __unused1;
__kernel_long_t sem_ctime; /* last change time */
__kernel_ulong_t __unused2;
#endif
__kernel_ulong_t sem_nsems; /* no. of semaphores in array */
__kernel_ulong_t __unused3;
__kernel_ulong_t __unused4;
};
#endif /* defined(__x86_64__) */
#if defined(__xtensa__)
#define HAVE_SEMID64_DS
#define HAVE_SEMID64_DS_TIME_HIGH
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#ifdef __XTENSA_EL__
unsigned long sem_otime; /* last semop time */
unsigned long sem_otime_high;
unsigned long sem_ctime; /* last change time */
unsigned long sem_ctime_high;
#else
unsigned long sem_otime_high;
unsigned long sem_otime; /* last semop time */
unsigned long sem_ctime_high;
unsigned long sem_ctime; /* last change time */
#endif
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long __unused3;
unsigned long __unused4;
};
#endif /* __xtensa__ */
#ifndef HAVE_SEMID64_DS
/*
* The semid64_ds structure for most architectures (though it came
* from x86_32 originally). Note extra padding because this structure
* is passed back and forth between kernel and user space.
*
* semid64_ds was originally meant to be architecture specific, but
* everyone just ended up making identical copies without specific
* optimizations, so we may just as well all use the same one.
*
* 64 bit architectures use a 64-bit long time field here, while
* 32 bit architectures have a pair of unsigned long values.
*
* On big-endian systems, the padding is in the wrong place for
* historic reasons, so user space has to reconstruct a time_t
* value using
*
* user_semid_ds.sem_otime = kernel_semid64_ds.sem_otime +
* ((long long)kernel_semid64_ds.sem_otime_high << 32)
*
* Pad space is left for 2 miscellaneous 32-bit values
*/
struct semid64_ds {
struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
#if __BITS_PER_LONG == 64
long sem_otime; /* last semop time */
long sem_ctime; /* last change time */
#else
#define HAVE_SEMID64_DS_TIME_HIGH
unsigned long sem_otime; /* last semop time */
unsigned long sem_otime_high;
unsigned long sem_ctime; /* last change time */
unsigned long sem_ctime_high;
#endif
unsigned long sem_nsems; /* no. of semaphores in array */
unsigned long __unused3;
unsigned long __unused4;
};
#endif /* semid64_ds */
#endif /* HAVE_SEMID64_DS */
#endif /* IPC_SEMBUF_H */
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